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首页> 外文期刊>ISIJ international >Three-body-type Abrasive Wear Behavior of Multi-alloyed White Cast Iron with Different Carbon Contents Used for Hot Work Rolls
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Three-body-type Abrasive Wear Behavior of Multi-alloyed White Cast Iron with Different Carbon Contents Used for Hot Work Rolls

机译：多合金白色铸铁的三体型磨料磨损行为，不同碳内含物用于热工作辊

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In this research, the three-body-type abrasive wear behavior of heat-treated multi-alloyed white cast irons, which has been used for work rolls in hot rolling stands, was investigated. Cast irons with varying C content from 1.73 to 2.34 mass% under 5 mass% of Cr, Mo, W, V each and 2 mass% Co were prepared. After annealing, the specimens were hardened from 1323 K and 1373 K austenitizing by fan air cooling. Hardened specimens (As-H) were tempered at three levels of temperatures which were at maximum tempered hardness (T_(HTmax)), lower and higher temperatures than that of T_(HTmax) (L-T_(HTmax) and H-T_(HTmax), respectively). A rubber wheel wear tester was used to evaluate the abrasive wear resistance. It was found that the relationship between wear loss (W_(l)) and wear distance (W_(d)) was expressed by a linear function in every wear test. In each heat treatment condition, the wear rate (Rw, mg/m) value decreased as the C content rose. As-H specimens showed almost higher wear resistance than the tempered specimens. In the tempered state, the lowest Rw were mostly obtained in the T_(HTmax) specimens. The higher austenitizing temperature provided the lower Rw value. The best wear resistance was obtained in the As-H specimen with 2.34%C in the both austenitizing temperatures. The Rw was lowered roughly in proportion to an increase in hardness. However, the Rw values scattered broadly at the volume fraction of retained austenite (Vγ ) values lower than 10% and then, decreased gradually as the Vγ value rose, irrespective of austenitizing temperature.
机译：在本研究中，研究了热处理的多合金白色铸铁的三体型磨料磨损行为，该磨料已经用于热轧支架中的工作辊。在5质量％的Cr，Mo，W，V的5质量％以下的1.73至2.34质量％下，铸造熨斗，其50％以下的含量为1.73至2.34质量％。退火后，通过风扇空气冷却，从1323k和1373k奥氏体化硬化样品。将硬化的标本（AS-H）以最大升温硬度（T_（Htmax）），低于T_（HTMAX）（L-T_（HTMAX）和H-T_（ Htmax）分别）。橡胶轮磨损测试仪用于评估磨料耐磨性。发现耐磨损失（W_（L））和磨损距离（W_（D））之间的关系被每次磨损测试中的线性函数表示。在每种热处理条件下，随着C含量升高，磨损率（RW，Mg / m）值降低。 AS-H标本显示出比钢化标本更高的耐磨性。在钢化状态下，最低RW主要在T_（Htmax）标本中获得。较高的奥氏体化温度提供了较低的RW值。在奥氏体化温度下，在AS-H标本中获得最佳耐磨性。 RW大致成比例地降低到硬度增加。然而，随着奥氏体化温度而言，随着v γ值升高，逐渐地散射在保留奥氏体（Vγγ）值的体积分数上散射的RW值随着v γ值升高而降低。

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